const formatTime = date => {
  const year = date.getFullYear()
  const month = date.getMonth() + 1
  const day = date.getDate()
  const hour = date.getHours()
  const minute = date.getMinutes()
  const second = date.getSeconds()

  return [year, month, day].map(formatNumber).join('/') + ' ' + [hour, minute, second].map(formatNumber).join(':')
}

const formatNumber = n => {
  n = n.toString()
  return n[1] ? n : '0' + n
}

/* 获取元素的data属性值 */
const getEleAttribute = (key,event) => {
  let dataSet = event.currentTarget.dataset;
  for(let attribute in dataSet) {
    if(attribute == key) {
      return dataSet[attribute];
    }
  }
  return '';
}

module.exports = {
  getEleAttribute: getEleAttribute,
  formatTime: formatTime
}
